Piano-stool



(No Model.)

G. W. RICH.A

PIANO sTooL.

N0. 275,413. y Patented Apr. 10,1883.

10 0000000 lll l 1 s N. persas Phuwunmgnpw. wmingm. n. c.

UNITED ST.L\*t-1a:s -il PATENT OFFICE.

GEORGE-VV.4 RICH, OF CHICAGO, ILLINOIS.

PIANO-STOOL.

SPECIFICATION forming part of Letters Patent No. 275,413, dated April 10, 1883.

Application tiled July 15. 1882.

-letters of reference marked thereon, which form a part of this specification.

This invention relates to that class of pianostools in which the seat can be adjusted higher' or lower to make it suitable for different-sized persons. The general arrangement by which this has been accomplished is a screw-threaded stern secured to the seat and projected through a screw-threaded plate or nut in or upon a socket of the base in a manner that the turning of the seat in one direction will raise it and the turning in the opposite direction will lower such seat. In this arrangement, however, the slender screw-threaded stem soon wore to allowthe seat to wabble. Besides that, the screw was exposed, and damaged the appearance of the stool; and it is the object of this my invention to produce a piano-stool the seat of which can be raised and lowered in a similar manner by rotating such seat in one direction or another, in which, however, the seat is held steady with the base, and the screw is clpvered and protected, to be entirely out of sig t.

Therefore my invention consists ofthe novel devices and combination of devices hereinafter described and specifically claimed.

In the accompanying drawings, Figure l represents a sectional elevation of. a pianostool having my improvements, and Fig. 2 a modified construction of the same.

A denotes the base of the stool, consisting of a cylindrical or partially-cylindrical central standard, a, to which the three legs b are secured by wood-screws or other well-known means. A thimble or cap, B, which is somewhat larger in diameter' than the standard a, and is exteriorly screw-"threaded, is rigidly' secured upon such standard a of base A by wood-screws or otherwise.

C is the seat, consisting of a circular plate or board, which on topis upholstered. A sleeve,

(No model.)

D, that is internally screw-threaded totover and mesh the screw-thread of thimble B, has a flange, d, with which it is secured by woodscrews to the bottom of seat C.

As'will be noticed, the sleeve D engaging with the thimble B on a large-diameter screwthread, such seat is held to the base very rigid, and will not allow a wabbling motion of the seat, and the sleeveD will entirely conceal the thirnble, and as the seat is lowered the sleeve D will pass over the standard a of base A and will present its smooth cylindrical surface,

which can be japanned to imitate the wood'ot"v which the base is made, so as to produce a ne ornamental nish.

In Fig. -2 I have shown a sectional view of a modified device for the connection between the base and seat of a piano-stool, which provides similar advantages as the one heretofore described, and in which E denotes the standard of the base, that in this case I provide with a cylindrical socket, Ae, forming the'gnide for the sleeve F. The top of standard E, I re-enforce with a metal cap,f. The sleeve F, being internally screw-threaded, will receive and engage with the screw-threaded head ot' a stem, G, which, with its lower end, is seated and secured into the bottom of socket e. F has a ange, and is secured to the seat Cin the same manner as heretofore described.

The device can be varied in its details in many ways without the necessity of deviating from the general construction, and therefore I would not like to be restricted to the particular arrangement shown and specitied.

The general construction herein shown and described is practicable as well for chairs and all kinds of stools.

l. In a pianostool, the sore w-threaded thimble or cap B,.of larger circumference than and secured to the upper part ot' standard a, and the i nternally-screw-threaded sleeve D, secured at its upper end to the seat C, and adapted to revolve exteriorly of said cap B, and the base A, substantially as and for' the purpose specified.

2. In combination with the eXteriorly-screwthreaded thimole or cap B, of greater circumference than and secured upon the upper por- The sleeve IOC 5 cover the screw-thread thereon, all substantion of the standard a of base A, the intermy invention I affix my signature in presence nally-sereW-threaded sleeve D having flanges of two witnesses. d at its upper end, and being secured to seat v t 7 C, and adapted to revolve upon the capB and GEORGE X RICH Witnesses:

EDWARD WESTLAKE,

R. G. SCHMID.

tiully as and for the purpose set forth.

In testimony that I claim the foregoing as 

